Utilization of Composite Materials in Saddle-Shaped Cable RoofsMechanics of Composite Materials - Tập 36 - Trang 385-388 - 2000
D. Serdjuks, K. Rocens, L. Pakrastinsh
A saddle-shaped cable roof formed by two orthogonal groups of cables joined with a compliant support contour is considered. The kinematic invariability of the roof obtained by prestabilizing the cables makes it possible to avoid heavy slabs of reinforced concrete in the construction of roofs and to use light composite materials. The main geometric characteristics for a cable roof with CFRP load-ca...... hiện toàn bộ
Hygrothermomechanical behavior of composites under nonsymmetric environmental effectsMechanics of Composite Materials - Tập 34 - Trang 369-378 - 1998
J. Brauns, K. Rocens
The paper discusses analytical methods for the stimation of mechanical properties and the behavior of composite materials under unilateral environmental exposure. An advanced graphite/epoxy composite plate and a densified wooden strand board of different configurations were examined. It was found that midplane strains, curvatures, and warping at nonsymmetric moisture (or temperature) distribution ...... hiện toàn bộ
Structural Changes in the Surface Friction Layer of a Polymeric Endoprosthesis CupMechanics of Composite Materials - Tập 36 - Trang 365-372 - 2000
E. A. Tsvetkova, Zh. V. Kadolich, V. A. Goldade, L. S. Pinchuk
A concept of creation of a polymeric insert for hip joint endoprostheses with the physiological and biomechanical properties typical of natural cartilage is proposed. The spherical friction surface of the insert is coated with a microporous layer imitating cartilage. This layer carries an electret charge, which improves the lubrication of the endoprosthesis with synovia and serves as a carrier of ...... hiện toàn bộ